104 results about "Mixed oxide" patented technology

In chemistry, a mixed oxide is a somewhat informal name for an oxide that contains cations of more than one chemical element or cations of a single element in several states of oxidation. The term is usually applied to solid ionic compounds that contain the oxide anion O²⁻ and two or more element cations. Typical examples are ilmenite (FeTiO₃), a mixed oxide of iron (Fe²⁺) and titanium (Ti⁴⁺) cations, the mineral perovskite and oxides sharing the perovskite structure and garnet. The cations may be the same element in different ionization states: a notable example is magnetite Fe₃O₄, which contains the cations Fe²⁺ ("ferrous" iron) and Fe³⁺ ("ferric" iron) in 1:2 ratio. Other notable examples include the ferrites, strontium titanate SrTiO₃ (which, despite its name, contains Ti⁴⁺ cations and not the TiO₃²⁻ anion), yttrium aluminum garnet Y₃Al₅O₁₂, and many more. Sometimes the term is applied loosely to solid solutions of metal oxides rather than chemical compounds...